Packing.



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. ITEI) STATES PATENT OFFICE.

LIONEL WILLIAM JOSEPH MAESDEN, OE MANCHESTER, ENGLAND, AS- SIGNOR TOUNITED STATES METALLIC PACKING COMPANY, LIMITED,

OF BRADFORD, ENGLAND.

PACKING.

Patented Aug. 15, 1905.

Application led April 17, 1905. SBIlLl N0. 256,080.

Great Britain, residing at 11 Queens Grove.

Longsight, Manchester. England, have invented certain new and usefulImprovements vin Packing, of which the following is a specilication.

According to my invention the improved packing consists of a peculiarcombination of cast-iron (or other metal) compound springringsconstructed and arranged as follows: A series of cast-iron (or othermetal) compound spring-rings are contained between two covering-rings ofangle or L-'shaped section, forming when placed together a pressuretightcasing. Each compound ring consists of a pair of ringsoIl angle-section,the whole forming a ring of rectangular section. The inner ring is soconstructed that an inward pressure shall he exerted on the piston-rod.The outer ring is so constructed that an outward pressure shall beexerted on the inner surface or wall of covering-rings above mentioned,the object being to prevent the passage oI gas, steam, &c., along therod or behind the spring-rings. The vertical faces of each completecompound ring form a groundjoint with its fellow and with the innervertical faces of the covering-ring. Other packing-rings are provided toprevent leakage around the covering-rings. p

Figure l is a longitudinal section of the complete packing for apiston-rod in the form it is preferred to adopt. Figs. 2, 3, and t areplans of the rings Z, e, and f, respectively.

a is the piston-rod, and b the stuHng-box.

o represents the L-shaped rings, each containing three pairs Of compoundspring-rings 0l. The rings c are separated from each other by compoundspringrings consisting of a split ring e, having a recessed face, theouter edge of which recess is beveled. Into this .recess is sprung aSplit ring f, having a ing flange at one end and an outwardly-projectingflange at the other end, containing a series of wedge-Shapedantifriction-metal (or brass) rings j. The annular space between theoutside of the ring /t and the inner surface of the false stulng-box isiilled with iibrous packing 7c, (preferably `triangular packing,) twoSections forming a rectangle.

A gland Z is also bolted to the front of the stuffing-box in order tocompress the fibrous packing it' and to compensate for wear in thewedge-shaped rings j. An annular space m is formed round the piston-rodinto which is placed an oiling and cleaning swab fed by a 'luhricatorx2. In a packing for a piston-rod, the combination OI' a stuHing-box, acovering-ring OI' angular section, and a series of compound spring-ringsor' rectangular section inclosed between the covering-ring' and thepiston-rod, each compound spring-ring being made up ot' a pair of ringsof angular section, One ring OI' each pair pressing outward against thecovering-ring and the other pressing inward against the piston-rod.

3. In a packing for a piston-rod, the combination of a stnilng-box, twocovering-rings of angular section, a compound spring-ring between thecovering-rings and pressing Outward against the inside oi' thestuffing-box, such ring consisting OI' a split ring with a bcveled faceand a spring split ring also with a beveled face, and a pair ofspring-rings each of angular section inclosed between each covering-ringand the piston-rod, one spring-ring pressing outward against thecovering-ring the other pressing inward against the pistonrod.

4. In a packing for a piston-rod, the combination'oIl a stuIHng-box, twocovering-rings of angular section, a compound spring-ring between thecovering-rings and pressing outward against the inside of thestuiiing-loox, such ring consisting of a split ring with a beveled faceand a spring split ring also with a beveled face, and a series ofcompound springring's of rectangular section inclosed between eachcovering-ring and the piston-rod, each compound spring-ring being madeup of a pair of rings of angular section, one ring of each pair pressingoutward against the coveringring and the other pressing inward againstthe piston-rod.

5. In a packing' for a piston-rod, the combination of a stuiIing-box, acovering-ring' of angular section, a pair of spring-rings each ofangular section inclosed between the coveringring and the piston-rod,one spring-ring pressing outward against the covering-ring, the otherpressing inward against the piston-rod, a second stuHing-box forming aprolongation oi' the first, a flanged ring in it, packing between thisring and the piston-rod, and packing between it and the stui'ng-box.

6. In a packing for a piston-rod, the combination of a stuiing-box, acovering-ring of angular section, a series of compound springrings ofrectangular section inclosed between the covering-ring and thepiston-rod, each compound spring-ring being made up of a pair of ringsof angular section, one ring of each pair pressing outward against'thecovering-ring and the other pressing inward against the piston-rod, asecond stuffing-box forniinga prolongation of the iirst, a iianged ringin it, packing between this ring and the piston-rod, and packing betweenit and the stuHing-box.

7. In a packing' for a piston-rod, the combination of a stuffing-box,two covering-rings of angular section, a compound spring-ring betweenthe covering-rings and pressing outward against the inside of thestuffing-box, such ring consisting of a split ring with a beveled faceand a spring split ring' also with a beveled face, a pair ofspring-rings each of angular section inclosed between each covering-ringand the piston-rod, one spring-ring pressing outward against thecovering-ring' the other pressing inward against the pistonrod, asecondstuiiing-box forming a prolongation of the first, a flanged ring in it,packing between this ring and the piston-rod, and packing between it andthe stuffing-box.

8. In a packing for a piston-rod, the combination of a stufiing-box, twocovering-rings of angular section, a compound spring-ring between thecovering-rings and pressing outward against the inside of thestuffing-box,

such ring consisting of a split ring with a beveled face and a springsplit -ring also with a beveled face, a series of compound springringsof rectangular section inclosed between each covering-ring and thepiston-rod, each compound spring-ring being made up oi' a pair of ringsof angular section, one ring of each pair pressing outward against thecovering-ring and the other pressing inward against the piston-rod, asecond stuiiing-box forming a prolongation of the first, a flanged ringin it, packing between this ring and the piston-rod, and packing betweenit and the stuing-box.

LIONEL WILLIAM JOSEPH MARSDEN. Witnesses:

VVILLIAW M. KERMODE, JONAS PEARsoN.

